prometheus

Commit Graph

Author	SHA1	Message	Date
Martin Disibio	1bcd13d6b5	Exemplar resize (#8974 ) * Create experimental circular buffer resize method, benchmarks Signed-off-by: Martin Disibio <mdisibio@gmail.com> * Optimize exemplar resize to only replay as many exemplars as needed Signed-off-by: Martin Disibio <mdisibio@gmail.com> * More comments, benchmark AddExemplar Signed-off-by: Martin Disibio <mdisibio@gmail.com> * optimizations Signed-off-by: Martin Disibio <mdisibio@gmail.com> * comment Signed-off-by: Martin Disibio <mdisibio@gmail.com> * Slight refactor of resize benchmark + make use of resize via runtime reloadable storage config. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Some more config related changes. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address some review comments. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address more review comments. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Refactor to remove usage of noopExemplarStorage and avoid race condition when resizing from Head code. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Fix or add comments to clarify some of the new behaviour. Signed-off-by: Callum Styan <callumstyan@gmail.com> * fix potential panics related to negative exemplar buffer lengths Signed-off-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Callum Styan <callumstyan@gmail.com>	3 years ago
Levi Harrison	d5c3c567d3	Remote Write: Add max samples per metadata send (#8959 ) * Added MaxSamplesPerSend Signed-off-by: Levi Harrison <git@leviharrison.dev> * Added tests Signed-off-by: Levi Harrison <git@leviharrison.dev> * Fixed order of require Signed-off-by: Levi Harrison <git@leviharrison.dev> * Added docs Signed-off-by: Levi Harrison <git@leviharrison.dev> * writes -> writesReceived Signed-off-by: Levi Harrison <git@leviharrison.dev> * Improved send loop Signed-off-by: Levi Harrison <git@leviharrison.dev>	3 years ago
Levi Harrison	b5f6f8fb36	Switched to go-kit/log Signed-off-by: Levi Harrison <git@leviharrison.dev>	4 years ago
hanjm	1df05bfd49	Add body_size_limit to prevent bad targets response large body cause Prometheus server OOM (#8827 ) Signed-off-by: hanjm <hanjinming@outlook.com>	4 years ago
Callum Styan	8fd73b1d28	Add Exemplar Remote Write support (#8296 ) * Write exemplars to the WAL and send them over remote write. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Update example for exemplars, print data in a more obvious format. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Add metrics for remote write of exemplars. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Fix incorrect slices passed to send in remote write. Signed-off-by: Callum Styan <callumstyan@gmail.com> * We need to unregister the new metrics. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address review comments Signed-off-by: Callum Styan <callumstyan@gmail.com> * Order of exemplar append vs write exemplar to WAL needs to change. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Several fixes to prevent sending uninitialized or incorrect samples with an exemplar. Fix dropping exemplar for missing series. Add tests for queue_manager sending exemplars Signed-off-by: Martin Disibio <mdisibio@gmail.com> * Store both samples and exemplars in the same timeseries buffer to remove the alloc when building final request, keep sub-slices in separate buffers for re-use Signed-off-by: Martin Disibio <mdisibio@gmail.com> * Condense sample/exemplar delivery tests to parameterized sub-tests Signed-off-by: Martin Disibio <mdisibio@gmail.com> * Rename test methods for clarity now that they also handle exemplars Signed-off-by: Martin Disibio <mdisibio@gmail.com> * Rename counter variable. Fix instances where metrics were not updated correctly Signed-off-by: Martin Disibio <mdisibio@gmail.com> * Add exemplars to LoadWAL benchmark Signed-off-by: Callum Styan <callumstyan@gmail.com> * last exemplars timestamp metric needs to convert value to seconds with ms precision Signed-off-by: Callum Styan <callumstyan@gmail.com> * Process exemplar records in a separate go routine when loading the WAL. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address review comments related to clarifying comments and variable names. Also refactor sample/exemplar to enqueue prompb types. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Regenerate types proto with comments, update protoc version again. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Put remote write of exemplars behind a feature flag. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address some of Ganesh's review comments. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Move exemplar remote write feature flag to a config file field. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address Bartek's review comments. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Don't allocate exemplar buffers in queue_manager if we're not going to send exemplars over remote write. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Add ValidateExemplar function, validate exemplars when appending to head and log them all to WAL before adding them to exemplar storage. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address more reivew comments from Ganesh. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Add exemplar total label length check. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address a few last review comments Signed-off-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Martin Disibio <mdisibio@gmail.com>	4 years ago
Damien Grisonnet	b50f9c1c84	Add label scrape limits (#8777 ) * scrape: add label limits per scrape Add three new limits to the scrape configuration to provide some mechanism to defend against unbound number of labels and excessive label lengths. If any of these limits are broken by a sample from a scrape, the whole scrape will fail. For all of these configuration options, a zero value means no limit. The `label_limit` configuration will provide a mechanism to bound the number of labels per-scrape of a certain sample to a user defined limit. This limit will be tested against the sample labels plus the discovery labels, but it will exclude the __name__ from the count since it is a mandatory Prometheus label to which applying constraints isn't meaningful. The `label_name_length_limit` and `label_value_length_limit` will prevent having labels of excessive lengths. These limits also skip the __name__ label for the same reasons as the `label_limit` option and will also make the scrape fail if any sample has a label name/value length that exceed the predefined limits. Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com> * scrape: add metrics and alert to label limits Add three gauge, one for each label limit to easily access the limit set by a certain scrape target. Also add a counter to count the number of targets that exceeded the label limits and thus were dropped. This is useful for the `PrometheusLabelLimitHit` alert that will notify the users that scraping some targets failed because they had samples exceeding the label limits defined in the scrape configuration. Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com> * scrape: apply label limits to __name__ label Apply limits to the __name__ label that was previously skipped and truncate the label names and values in the error messages as they can be very very long. Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com> * scrape: remove label limits gauges and refactor Remove `prometheus_target_scrape_pool_label_limit`, `prometheus_target_scrape_pool_label_name_length_limit`, and `prometheus_target_scrape_pool_label_value_length_limit` as they are not really useful since we don't have the information on the labels in it. Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com>	4 years ago
Levi Harrison	fa184a5fc3	Add OAuth 2.0 Config (#8761 ) * Introduced oauth2 config into the codebase Signed-off-by: Levi Harrison <git@leviharrison.dev>	4 years ago
Julien Pivotto	e635ca834b	Add environment variable expansion in external label values Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Julien Pivotto	49016994ac	Switch to alertmanager api v2 According to the 2.25 release notes, 2.26 should switch to alertmanager api v2 by default. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Robert Fratto	5b78aa0649	Contribute grafana/agent sigv4 code (#8509 ) * Contribute grafana/agent sigv4 code * address review feedback - move validation logic for RemoteWrite into unmarshal - copy configuration fields from ec2 SD config - remove enabled field, use pointer for enabling sigv4 * Update config/config.go * Don't provide credentials if secret key / access key left blank * Add SigV4 headers to the list of unchangeable headers. * sigv4: don't include all headers in signature * only test for equality in the authorization header, not the signed date * address review feedback 1. s/httpClientConfigEnabled/httpClientConfigAuthEnabled 2. bearer_token tuples to "authorization" 3. Un-export NewSigV4RoundTripper * add x-amz-content-sha256 to list of unchangeable headers * Document sigv4 configuration * add suggestion for using default AWS SDK credentials Signed-off-by: Robert Fratto <robertfratto@gmail.com> Co-authored-by: Julien Pivotto <roidelapluie@gmail.com>	4 years ago
Julien Pivotto	93c6139bc1	Support follow_redirect This PR introduces support for follow_redirect, to enable users to disable following HTTP redirects. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Harkishen-Singh	79ba53a6c4	Custom headers on remote-read and refactor implementation to roundtripper. Signed-off-by: Harkishen-Singh <harkishensingh@hotmail.com>	4 years ago
Julien Pivotto	8787f0aed7	Update common to support credentials type Most of the backwards compat tests is done in common. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Harkishen-Singh	77c20fd2f8	Adds support to configure retry on Rate-Limiting from remote-write config. Signed-off-by: Harkishen-Singh <harkishensingh@hotmail.com>	4 years ago
Nándor István Krácser	509000269a	remote_write: allow passing along custom HTTP headers (#8416 ) * remote_write: allow passing along custom HTTP headers Signed-off-by: Nandor Kracser <bonifaido@gmail.com> * add warning Signed-off-by: Nandor Kracser <bonifaido@gmail.com> * remote_write: add header valadtion Signed-off-by: Nandor Kracser <bonifaido@gmail.com> * extend tests for bad remote write headers Signed-off-by: Nandor Kracser <bonifaido@gmail.com> * remote_write: add note about the authorization header Signed-off-by: Nandor Kracser <bonifaido@gmail.com>	4 years ago
gotjosh	4eca4dffb8	Allow metric metadata to be propagated via Remote Write. (#6815 ) * Introduce a metadata watcher Similarly to the WAL watcher, its purpose is to observe the scrape manager and pull metadata. Then, send it to a remote storage. Signed-off-by: gotjosh <josue@grafana.com> * Additional fixes after rebasing. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Rework samples/metadata metrics. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Use more descriptive variable names in MetadataWatcher collect. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Fix issues caused during rebasing. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Fix missing metric add and unneeded config code. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Address some review comments. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Fix metrics and docs Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Replace assert with require Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Bring back max_samples_per_send metric Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Fix tests Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> Co-authored-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	4 years ago
Bryan Boreham	90fc6be70f	Default to bigger remote_write sends (#5267 ) * Default to bigger remote_write sends Raise the default MaxSamplesPerSend to amortise the cost of remote calls across more samples. Lower MaxShards to keep the expected max memory usage within reason. Signed-off-by: Bryan Boreham <bryan@weave.works> * Change default Capacity to 2500 To maintain ratio with MaxSamplesPerSend Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	4 years ago
Andy Bursavich	4e6a94a27d	Invert service discovery dependencies (#7701 ) This also fixes a bug in query_log_file, which now is relative to the config file like all other paths. Signed-off-by: Andy Bursavich <abursavich@gmail.com>	4 years ago
Julien Pivotto	f482c7bdd7	Add per scrape-config targets limit (#7554 ) * Add per scrape-config targets limit Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Julien Pivotto	0cca23d3ed	DigitalOcean, Docker Swarm: properly load files Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
Julien Pivotto	9d9bc524e5	Add query log (#6520 ) * Add query log, make stats logged in JSON like in the API Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	5 years ago
Callum Styan	67838643ee	Add config option for remote job name (#6043 ) * Track remote write queues via a map so we don't care about index. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Support a job name for remote write/read so we can differentiate between them using the name. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Remote write/read has Name to not confuse the meaning of the field with scrape job names. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Split queue/client label into remote_name and url labels. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Don't allow for duplicate remote write/read configs. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Ensure we restart remote write queues if the hash of their config has not changed, but the remote name has changed. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Include name in remote read/write config hashes, simplify duplicates check, update test accordingly. Signed-off-by: Callum Styan <callumstyan@gmail.com>	5 years ago
Simon Pasquier	cccd542891	*: avoid missed Alertmanager targets (#6455 ) This change makes sure that nearly-identical Alertmanager configurations aren't merged together. The config's identifier was the MD5 hash of the configuration serialized to JSON but because `relabel.Regexp` has no public field and doesn't implement the JSON.Marshaler interface, it was always serialized to "{}". In practice, the identifier can be based on the index of the configuration in the list. Signed-off-by: Simon Pasquier <spasquie@redhat.com>	5 years ago
Chris Marchbanks	a6a55c433c	Improve desired shards calculation (#5763 ) The desired shards calculation now properly keeps track of the rate of pending samples, and uses the previously unused integralAccumulator to adjust for missing information in the desired shards calculation. Also, configure more capacity for each shard. The default 10 capacity causes shards to block on each other while sending remote requests. Default to a 500 sample capacity and explain in the documentation that having more capacity will help throughput. Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com>	5 years ago
Max Leonard Inden	41c22effbe	config&notifier: Add option to use Alertmanager API v2 With v0.16.0 Alertmanager introduced a new API (v2). This patch adds a configuration option for Prometheus to send alerts to the v2 endpoint instead of the defautl v1 endpoint. Signed-off-by: Max Leonard Inden <IndenML@gmail.com>	6 years ago
Callum Styan	e9129abeff	Remove max_retries from queue_config since it's not used in remote write anymore. Signed-off-by: Callum Styan <callumstyan@gmail.com>	6 years ago
Tariq Ibrahim	8fdfa8abea	refine error handling in prometheus (#5388 ) i) Uses the more idiomatic Wrap and Wrapf methods for creating nested errors. ii) Fixes some incorrect usages of fmt.Errorf where the error messages don't have any formatting directives. iii) Does away with the use of fmt package for errors in favour of pkg/errors Signed-off-by: tariqibrahim <tariq181290@gmail.com>	6 years ago
Callum Styan	5603b857a9	Check if label value is valid when unmarhsaling external labels from YAML, add a test to config_tests for valid/invalid external label value. Signed-off-by: Callum Styan <callumstyan@gmail.com>	6 years ago
Tom Wilkie	c7b3535997	Use pkg/relabelling in remote write. - Unmarshall external_labels config as labels.Labels, add tests. - Convert some more uses of model.LabelSet to labels.Labels. - Remove old relabel pkg (fixes #3647). - Validate external label names. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>	6 years ago
Julien Pivotto	4397916cb2	Add honor_timestamps (#5304 ) Fixes #5302 Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	6 years ago
Simon Pasquier	027d2ece14	config: resolve more file paths (#5284 ) Signed-off-by: Simon Pasquier <spasquie@redhat.com>	6 years ago
Simon Pasquier	c8a1a5a93c	discovery/kubernetes: fix support for password_file and bearer_token_file (#5211 ) * discovery/kubernetes: fix support for password_file Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Create and pass custom RoundTripper to Kubernetes client Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Use inline HTTPClientConfig Signed-off-by: Simon Pasquier <spasquie@redhat.com>	6 years ago
Callum Styan	6f69e31398	Tail the TSDB WAL for remote_write This change switches the remote_write API to use the TSDB WAL. This should reduce memory usage and prevent sample loss when the remote end point is down. We use the new LiveReader from TSDB to tail WAL segments. Logic for finding the tracking segment is included in this PR. The WAL is tailed once for each remote_write endpoint specified. Reading from the segment is based on a ticker rather than relying on fsnotify write events, which were found to be complicated and unreliable in early prototypes. Enqueuing a sample for sending via remote_write can now block, to provide back pressure. Queues are still required to acheive parallelism and batching. We have updated the queue config based on new defaults for queue capacity and pending samples values - much smaller values are now possible. The remote_write resharding code has been updated to prevent deadlocks, and extra tests have been added for these cases. As part of this change, we attempt to guarantee that samples are not lost; however this initial version doesn't guarantee this across Prometheus restarts or non-retryable errors from the remote end (eg 400s). This changes also includes the following optimisations: - only marshal the proto request once, not once per retry - maintain a single copy of the labels for given series to reduce GC pressure Other minor tweaks: - only reshard if we've also successfully sent recently - add pending samples, latest sent timestamp, WAL events processed metrics Co-authored-by: Chris Marchbanks <csmarchbanks.com> (initial prototype) Co-authored-by: Tom Wilkie <tom.wilkie@gmail.com> (sharding changes) Signed-off-by: Callum Styan <callumstyan@gmail.com>	6 years ago
Bartek Płotka	62c8337e77	Moved configuration into `relabel` package. (#4955 ) Adapted top dir relabel to use pkg relabel structs. Removal of this in a separate tracked here: https://github.com/prometheus/prometheus/issues/3647 Signed-off-by: Bartek Plotka <bwplotka@gmail.com>	6 years ago
Ryota Arai	135d580ab2	Introduce min_shards for remote write to set minimum number of shards. (#4924 ) Signed-off-by: Ryota Arai <ryota.arai@gmail.com>	6 years ago
Julius Volz	d28246e337	Fix config loading panics on nil pointer slice elements (#4942 ) Fixes https://github.com/prometheus/prometheus/issues/4902 Fixes https://github.com/prometheus/prometheus/issues/4889 Signed-off-by: Julius Volz <julius.volz@gmail.com>	6 years ago
Ben Kochie	c6399296dc	Fix spelling/typos (#4921 ) * Fix spelling/typos Fix spelling/typos reported by codespell/misspell. * UK -> US spelling changes. Signed-off-by: Ben Kochie <superq@gmail.com>	6 years ago
Daisy T	7d01ead689	change time.duration to model.duration for standardization (#4479 ) Signed-off-by: Daisy T <daisyts@gmx.com>	6 years ago
Goutham Veeramachaneni	c28cc5076c	Saner defaults and metrics for remote-write (#4279 ) * Rename queueCapacity to shardCapacity * Saner defaults for remote write * Reduce allocs on retries Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>	6 years ago
Paul Gier	d24d2acd11	config: set target group source index during unmarshalling (#4245 ) * config: set target group source index during unmarshalling Fixes issue #4214 where the scrape pool is unnecessarily reloaded for a config reload where the config hasn't changed. Previously, the discovery manager changed the static config after loading which caused the in-memory config to differ from a freshly reloaded config. Signed-off-by: Paul Gier <pgier@redhat.com> * [issue #4214] Test that static targets are not modified by discovery manager Signed-off-by: Paul Gier <pgier@redhat.com>	7 years ago
Philippe Laflamme	2aba238f31	Use common HTTPClientConfig for marathon_sd configuration (#4009 ) This adds support for basic authentication which closes #3090 The support for specifying the client timeout was removed as discussed in https://github.com/prometheus/common/pull/123. Marathon was the only sd mechanism doing this and configuring the timeout is done through `Context`. DC/OS uses a custom `Authorization` header for authenticating. This adds 2 new configuration properties to reflect this. Existing configuration files that use the bearer token will no longer work. More work is required to make this backwards compatible.	7 years ago
Manos Fokas	25f929b772	Yaml UnmarshalStrict implementation. (#4033 ) * Updated yaml vendor package. * remove checkOverflow duplicate in rulefmt * remove duplicated HTTPClientConfig.Validate() * Added yaml static check.	7 years ago
pasquier-s	fc8cf08f42	Prevent invalid label names with labelmap (#3868 ) This change ensures that the relabeling configurations using labelmap can't generate invalid label names.	7 years ago
Shubheksha Jalan	0471e64ad1	Use shared types from the `common` repo (#3674 ) * refactor: use shared types from common repo, remove util/config * vendor: add common/config * fix nit	7 years ago
Shubheksha Jalan	ec94df49d4	Refactor SD configuration to remove `config` dependency (#3629 ) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports	7 years ago
Brian Brazil	fba80da635	Fix default of read_recent to be false. (#3617 ) This is what is documented in the migration guide, and the default settings should make sense for a true long term storage. Document the setting.	7 years ago
Krasi Georgiev	e405e2f1ea	refactored discovery	7 years ago
Alberto Cortés	8f6a9f7833	config: simplify tests by using testutil.NotOk (#3289 ) Also include filename in all LoadFile errors Also add mesage to testuitl.NotOk so we can identify failing tests when using table driven tests.	7 years ago
Tobias Schmidt	7098c56474	Add remote read filter option For special remote read endpoints which have only data for specific queries, it is desired to limit the number of queries sent to the configured remote read endpoint to reduce latency and performance overhead.	7 years ago
Thibault Chataigner	bf4a279a91	Remote storage reads based on oldest timestamp in primary storage (#3129 ) Currently all read queries are simply pushed to remote read clients. This is fine, except for remote storage for wich it unefficient and make query slower even if remote read is unnecessary. So we need instead to compare the oldest timestamp in primary/local storage with the query range lower boundary. If the oldest timestamp is older than the mint parameter, then there is no need for remote read. This is an optionnal behavior per remote read client. Signed-off-by: Thibault Chataigner <t.chataigner@criteo.com>	7 years ago

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220 Commits (eeace6bcab164d588b99786cbc26a0accfa8691c)